Godchecker

Maybe Godchecker isn't as thorough as Bullfinch's Mythology, but it's probably more diverse. It's a data base with listings for over 1,600 deities. While it covers the standard Greek gods it also covers African gods, Mayan gods, Norse gods and more. The approach of the writers is a bit humorous but the information they provide is accurate as far as I can tell. A great resource if you're working on term papers about Native American legends, the Chinese Jade Emperor, or even the Valkyries. They're all here.